Lamp.



Patented June 26, I900. E. F. SMITH.

LAMP.

(Application filed Aug. 26, 1898.)

(No Model.)

I flnn j WfM W" UNITED STATES PATENT EErcE,

EDWARD F. SMITH, OF CINCINNATI, OHIO.

' LAMP.

SPECIFICATION forming part of Letters Patent No. 652,298, dated June 26,1900. Application filed August 26, 1898. Serial No. 689,586. (No model.)

To ctZZ whom it may concern:

Be itknown that I, EDWARD F. SMITH, a citizen of the United States, anda resident of Cincinnati, Hamilton county, State of Ohio, have inventeda certain new and useful Improvement in Lamps; and I do hereby declarethe following to be a clear, full, and exact description of theinvention, such as will enable others skilled in the artto which itappert-ains tomake and use the same, attention being called to theaccompanying drawings, with the reference-numerals marked thereon, whichform a part of this specification.

This invention relates to lamps, the main feature being the constructionfor supporting a reflector so that it becomes adjustable in certain wayswith reference to the burner.

In the following specification, and particularly pointed out in theclaims, is found a full description of the invention, its operation,parts, and construction, which latter is also illustrated in theaccompanying drawings, in which Figure 1 is a front view of a reflectorsupported upon a suitable lamp, which latter is in this case supposed tobe an acetylene-gas lamp combining a generator and burner in one andadapted to be used as a bicycle-lamp. Fig. 2 is a side elevation of Fig.1 with the reflector in section. Fig. 3 is a rear View of Fig. 1; andFig. at is a horizontal section through the reflector, showing the topof the lamp below it.

7is the burner of the lamp, the illuminant acetylene gas in thiscase-being supplied through neck 8, which latter is mounted on the body9 of the lamp. This body in this case constitutes the generator whichproduces the acetylene gas. For attachment to a bicycle in case the lampis so used connecting means 10 are provided.

11 is the reflector, preferably constructed on a true parabolic curveand supported on the neck 8 of the burner by means ofa bracket 12. Asmaterial for this reflector sheet metal, plated and polished, ispreferably used. The reflector surrounds the burner, which latterreaches into the former through an opening 1-3, so that, with theexception of those passing to the open front, all rays of the flame aresubject to the direct action of the refiector. As is well known byreason of the parabolic curve of the reflector any rays of lightstriking the same when proceeding from the flame while in the focalpoint of the curve will be reflected in a direction parallel to the axisof the reflector, so that with the latter so adjusted as to bring theflame within the focus of its curve a number of parallel rays forming along, condensed, and penetrating beam of light, as shown in Fig. 2, willbe emitted. On the other hand, if the reflector is adjusted to bringtheflame slightly back of the focal point a number of shorter anddiverging rays of light are thrown out, as shown in Fig. 4. No lens isto be used with this reflector, so that the reflected light is notinfluenced in any way except as it is directed by the parabolic curve ofthe reflector. To exclude the action of draft and wind, merely a plainglass window 14: is used, held in place by a spring-wire 15,1yingin anannular groove 16, turned in the outer edge of the reflector. As beforestated, the direction of the emitted rays of light may be eifected intwo ways as far as it is contemplated and accomplished by my inventionand according to whether the flame is within or outside of the focalpoint of the curve. For such purpose the reflector is adjustablysupported on its supporting-bracket, which latter in turn is againadjustably connected, so that adjustment in two directions, horizontallyas well as, verti cally, but one independent from the other, isobtained. For the horizontal adjustmentthat is, in the direction of theaxis of the re= flector, which adjustment forms at the same time themeans for connecting the latter-=a rearwardly-projecting pin 17, havinga flange 18 for connection by solder or rivet or screw 19, is providedand fitted adjustably into an opening 21 at the upper end of bracket 12.It is held therein after adjustment to the proper position by aset-screw 22. For vertical adjustment-that is, at right angles to theaxis of the reflector-a vertically-directed opening 23 is provided inthe lower end portion of the bracket, which portion for such purpose isbent at right angles to the upper portion of the bracket. This opening23 is fitted to receive the neck 8 of the burner, and the bracket isheld thereon by means of a set-screw 24. As will be seen, by means ofthis double adjustment the reflector may be adjusted to bring the flameeither within or outside of its focus, and after primary adjustment ofpositions the same means may also be used to preserve these positions,since otherwise, by reason of changes in the size of the flame, theintended -relation between flame and reflector might be disturbed.

The products of combustion are carried ofi by a flue 25, closed by aremovable cap 26, having openings 27 in its side. To prevent corrosionand blackening of the upper surface of the reflector, a chimney 28, oftransparent material, preferably mica, is used, which reaches partlyinto the space within the reflector, thereby preventing any of theproducts of combustion from coming in contact or forming deposits on theinner surface of the reflector, while at the same time its trans parencyprevents any interference with the reflected light. This mica chimney 28is sup.- ported within flue 25 and secured to the inside of neck 29 ofremovable cap 26.

31 represents ventilation-openings in the reflector.

If this lamp and reflector is to be used in connection with a bicycle,the customary colored jewels, indicating right and left side, may beinserted into the sides of the reflector.

Having described my invention, I claim as new- 1. In a lamp thecombination of a reflector, aburuer extending within the same, and abracket to which each of them is connected, the connection beingindependently adjustable in each case and the adjustments being indirections at right angles to each other.

2. In a lamp, the combination of a reflector, a bracket to which it isadjust-ably connected and a burner to which the bracket is adjustablyconnected, the two adjustments being at right angles to each other.

3. In a lamp, the combination of a burner, a reflector and a bracket towhich each of them is adjustably connected, the adjustmentbei-ng'independent for each, so that the bracket and any one of themembers connected thereto may be adjusted as a whole with reference tothe other remaining member and independent therefrom.

4. In a lamp, the combination of a reflector, of a parabolcidal shape,having an opening 13 to admit a burner and a pin 17 extending rearwardlyfrom its apex, a burner reaching with its upper part into the spacewithin the reflector, an angular bracket 12 having in its ends,respectively a horizontally and vertically disposed opening, one'openingfitted to receive pin 17 and the other fitted to receive the neck of theburner and means to hold in position the parts so fitted to each otherthe connection being in each case adjustable.

5. In alam p, the combination of a burner, a reflector above it intowhich this burner extends, an opening in the upper part of the reflectoropposite and above the burner, a flue 25, starting upwardly from thisopening and connected to the reflector, its upper end being closed by acap 26, which is removably supported thereat and is provided withlateral openings in its side, and a chimney 28 of transparent materialsupported within flue 25, but extending below the lower edge thereof soas to reach partly into the-space within the reflector, but terminatingabove the burner therein.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

ED WARD F. SMITH.

\Vitnesses:

O. SPENGEL, ARTHUR KLINE.

